Regex Exact Number of Characters -

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how limit number of characters (alpha or numeric or anything)

example have (x can character)

name.xxx-xxx-xxxxxx-name name.xxxxxxx-name

i want exclude of first format , thought should like

name.{7}*-name

i want 7 characters between . , -

you don't want 7 characters. want 7 non-dash characters 

name\.[^-]{7}-name

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